Tone Mapping, Z-Depth & Documentation

Forums: Tone Mapping, Z-Depth & Documentation
Maxon Cinema 4D (Export script developed by abstrax, Integrated Plugin developed by aoktar)

Moderator: aoktar

Tone Mapping, Z-Depth & Documentation

Postby Aleksei » Mon Oct 25, 2021 5:08 pm

Aleksei Mon Oct 25, 2021 5:08 pm
Hi, I've noticed that in the documentation there is no description about the fields Color Space and Force Tone Mapping: https://docs.otoy.com/cinema4d/OctaneRe ... tings.html
Hence, I have a couple of questions.

1. Before the tone mapping optiopn disappeared from render passes I used it to render the Z-Depth map wth correct values (like it was set up in the render preview with Z-Depth Max slider). Now, there is no tone mapping option in passes and disregarding the value I set with Z-Depth Max slider I always have a white rendered map. In After Effects I have to apply extreme exposure effect and adjust gamma to start using the depth map as expected. The Force Tone Mapping which migrated from passes to "main" settings tab doesn't make any different when we're talking about the Z-Depth. What's the proper way to render Z-Depth in such a way that I can send it to someone else who won't have to guess what level of exposure they must apply to the rendered map?
2. Can you, please, explain what's the logic behind the Force Tone Mapping and how we can use it to our advantage?

Image

P.S. The link doesn't work:

Image
RTX 4090 | Ryzen 9 7950X3D | 64GB | Win 11 23H2
Aleksei
Licensed Customer
Licensed Customer
 
Posts: 109
Joined: Tue May 31, 2016 10:53 pm
Location: Poland

Re: Tone Mapping, Z-Depth & Documentation

Postby jayroth2020 » Mon Oct 25, 2021 5:28 pm

jayroth2020 Mon Oct 25, 2021 5:28 pm
With regard to the missing definitions for color space and tone mapping you're correct, although color space is indirectly discussed in the color management section, it is not explicitly defined as it should be. Thank you for brining that to our attention — it will be corrected in the next revision of the documentation.

Force Tone Mapping is considered an obsolete feature, as it can interfere with the much better results produced by the color management system introduced at the end of the 2020 cycle. Force Tone Mapping uses older, less precise algorithms to compress color from the Octane Spectral space into RGB space. The features within the new color management system will produce a significantly better result that is also compatible with modern ACES/OCIO based color management pipelines. As some still use the Force Mapping option, it has remained in place for compatibility.
CaseLabs Mercury S8 / ASUS Z10PE-D8 WS / Crucial 64GB 2133 DDR4 / 2 XEON E5-2687W v3 3.1 GHz / EVGA 1600 P2 / 1 EVGA RTX 3090Ti FTW3 Hybrid / 2 EVGA RTX 2080Ti FTW3 Hybrid/ Cinema 4D
jayroth2020
OctaneRender Team
OctaneRender Team
 
Posts: 468
Joined: Mon May 04, 2020 7:30 pm

Re: Tone Mapping, Z-Depth & Documentation

Postby Aleksei » Tue Oct 26, 2021 10:11 pm

Aleksei Tue Oct 26, 2021 10:11 pm
Thanks, jayroth2020!
Could you, please, advice what should I do to avoid Z-Depth maps to be rendered white?
RTX 4090 | Ryzen 9 7950X3D | 64GB | Win 11 23H2
Aleksei
Licensed Customer
Licensed Customer
 
Posts: 109
Joined: Tue May 31, 2016 10:53 pm
Location: Poland

Re: Tone Mapping, Z-Depth & Documentation

Postby jayroth2020 » Wed Oct 27, 2021 12:41 am

jayroth2020 Wed Oct 27, 2021 12:41 am
I believe you will find that the depth maps do have information contained; you just need to use the various exposure options in your composting application to dial in the range desired. We are making improvements in this area, so check the 2021 beta releases for more.
CaseLabs Mercury S8 / ASUS Z10PE-D8 WS / Crucial 64GB 2133 DDR4 / 2 XEON E5-2687W v3 3.1 GHz / EVGA 1600 P2 / 1 EVGA RTX 3090Ti FTW3 Hybrid / 2 EVGA RTX 2080Ti FTW3 Hybrid/ Cinema 4D
jayroth2020
OctaneRender Team
OctaneRender Team
 
Posts: 468
Joined: Mon May 04, 2020 7:30 pm

Re: Tone Mapping, Z-Depth & Documentation

Postby Aleksei » Wed Oct 27, 2021 9:49 am

Aleksei Wed Oct 27, 2021 9:49 am
Good, so it works as expected now. Thanks again, jayroth2020.
RTX 4090 | Ryzen 9 7950X3D | 64GB | Win 11 23H2
Aleksei
Licensed Customer
Licensed Customer
 
Posts: 109
Joined: Tue May 31, 2016 10:53 pm
Location: Poland

Return to Maxon Cinema 4D


Who is online

Users browsing this forum: No registered users and 15 guests

Thu Mar 28, 2024 10:55 pm [ UTC ]